The areas affected include. Nearshore Waters from Wilmette Harbor to Calumet Harbor. Nearshore Waters from Calumet Harbor to Michigan City. Open Waters from Wilmette Harbor to Michigan City out to Mid Lake. At 415 PM CDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots and small hail. These thunderstorms were located along a line extending from near Ohare Airport to Burns Harbor, moving east southeast at 20 to 25 knots. Locations impacted include. Harrison-Dever Crib, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Michigan City, Indiana Harbor, Montrose Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, and Marina Shores at Dune Harbor.

* WHAT. North winds to 25 kt and significant waves to 5 ft expected. * WHERE. Calumet Harbor IL to Michigan City IN, and Wilmette Harbor to Calumet Harbor IL. * WHEN. From 4 AM to 10 PM CDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. High wave action and dangerous currents expected at Lake Michigan beaches. Waves 3 to 5 ft expected. * WHERE. In Illinois, Northern Cook and Central Cook Counties. In Indiana, Lake IN and Porter Counties. * WHEN. From late tonight through Wednesday evening. * IMPACTS. Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

* WHAT. North winds 10 knots to 20 knots with gusts up to 25 knots and waves 2 to 5 feet expected. * WHERE. St Joseph to Pentwater. * WHEN. From 5 AM to 11 PM EDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE. Allegan and Van Buren counties. * WHEN. From Wednesday afternoon through Wednesday evening. * IMPACTS. Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.